20121017008

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8009959}}^1$

素因数の和:8010124

約数の個数: 20

約数和(自身を含む): 39232784080

約数和(自身を除く): 19111767072

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8009959, 16019918, 32039836, 64079672, 128159344, 1257563563, 2515127126, 5030254252, 10060508504, 20121017008]

約数ペア:

[(1, 20121017008), (2, 10060508504), (4, 5030254252), (8, 2515127126), (16, 1257563563), (157, 128159344), (314, 64079672), (628, 32039836), (1256, 16019918), (2512, 8009959)]